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Finding the Fourth Proportional to 571.19, 786.34 and 545.07

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Solution

The fourth proportional to 571.19, 786.34 and 545.07 is: 750.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.19 : 786.34 = 545.07 : x
  2. Step 2: Convert to fraction form
    571.19/786.34 = 545.07/x
  3. Step 3: Cross multiply
    571.19x = 786.34 × 545.07
  4. Step 4: Simplify right side
    571.19x = 428,607.62
  5. Step 5: Solve for x
    x = 428,607.62/571.19
  6. Step 6: Final answer
    x = 750.38

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Double scale
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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.