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Finding the Fourth Proportional to 581.76, 876.24 and 539.28

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Solution

The fourth proportional to 581.76, 876.24 and 539.28 is: 812.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.76 : 876.24 = 539.28 : x
  2. Step 2: Convert to fraction form
    581.76/876.24 = 539.28/x
  3. Step 3: Cross multiply
    581.76x = 876.24 × 539.28
  4. Step 4: Simplify right side
    581.76x = 472,538.71
  5. Step 5: Solve for x
    x = 472,538.71/581.76
  6. Step 6: Final answer
    x = 812.26

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.