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Finding the Fourth Proportional to 62.60, 93.32 and 61.18

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Solution

The fourth proportional to 62.60, 93.32 and 61.18 is: 91.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.60 : 93.32 = 61.18 : x
  2. Step 2: Convert to fraction form
    62.60/93.32 = 61.18/x
  3. Step 3: Cross multiply
    62.60x = 93.32 × 61.18
  4. Step 4: Simplify right side
    62.60x = 5,709.32
  5. Step 5: Solve for x
    x = 5,709.32/62.60
  6. Step 6: Final answer
    x = 91.20

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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.