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Finding the Fourth Proportional to 571.83, 789.15 and 372.75

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Solution

The fourth proportional to 571.83, 789.15 and 372.75 is: 514.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.83 : 789.15 = 372.75 : x
  2. Step 2: Convert to fraction form
    571.83/789.15 = 372.75/x
  3. Step 3: Cross multiply
    571.83x = 789.15 × 372.75
  4. Step 4: Simplify right side
    571.83x = 294,155.66
  5. Step 5: Solve for x
    x = 294,155.66/571.83
  6. Step 6: Final answer
    x = 514.41

Related Problems

Find fourth proportional to 285.92, 394.58 and 186.38
Half scale
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Double scale
Find fourth proportional to 572.83, 790.53 and 373.75
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.