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Finding the Fourth Proportional to 697.44, 1,042.18 and 501.53

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Solution

The fourth proportional to 697.44, 1,042.18 and 501.53 is: 749.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.44 : 1,042.18 = 501.53 : x
  2. Step 2: Convert to fraction form
    697.44/1,042.18 = 501.53/x
  3. Step 3: Cross multiply
    697.44x = 1,042.18 × 501.53
  4. Step 4: Simplify right side
    697.44x = 522,680.89
  5. Step 5: Solve for x
    x = 522,680.89/697.44
  6. Step 6: Final answer
    x = 749.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.