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Finding the Fourth Proportional to 140.79, 211.14 and 59.53

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Solution

The fourth proportional to 140.79, 211.14 and 59.53 is: 89.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.79 : 211.14 = 59.53 : x
  2. Step 2: Convert to fraction form
    140.79/211.14 = 59.53/x
  3. Step 3: Cross multiply
    140.79x = 211.14 × 59.53
  4. Step 4: Simplify right side
    140.79x = 12,569.16
  5. Step 5: Solve for x
    x = 12,569.16/140.79
  6. Step 6: Final answer
    x = 89.28

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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.