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Finding the Fourth Proportional to 591.20, 815.28 and 460.16

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Solution

The fourth proportional to 591.20, 815.28 and 460.16 is: 634.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.20 : 815.28 = 460.16 : x
  2. Step 2: Convert to fraction form
    591.20/815.28 = 460.16/x
  3. Step 3: Cross multiply
    591.20x = 815.28 × 460.16
  4. Step 4: Simplify right side
    591.20x = 375,159.24
  5. Step 5: Solve for x
    x = 375,159.24/591.20
  6. Step 6: Final answer
    x = 634.57

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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.