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Finding the Fourth Proportional to 571.48, 857.08 and 365.72

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Solution

The fourth proportional to 571.48, 857.08 and 365.72 is: 548.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.48 : 857.08 = 365.72 : x
  2. Step 2: Convert to fraction form
    571.48/857.08 = 365.72/x
  3. Step 3: Cross multiply
    571.48x = 857.08 × 365.72
  4. Step 4: Simplify right side
    571.48x = 313,451.30
  5. Step 5: Solve for x
    x = 313,451.30/571.48
  6. Step 6: Final answer
    x = 548.49

Related Problems

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Half scale
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Double scale
Find fourth proportional to 572.48, 858.58 and 366.72
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.