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Finding the Fourth Proportional to 64.32, 88.28 and 62.52

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Solution

The fourth proportional to 64.32, 88.28 and 62.52 is: 85.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.32 : 88.28 = 62.52 : x
  2. Step 2: Convert to fraction form
    64.32/88.28 = 62.52/x
  3. Step 3: Cross multiply
    64.32x = 88.28 × 62.52
  4. Step 4: Simplify right side
    64.32x = 5,518.95
  5. Step 5: Solve for x
    x = 5,518.95/64.32
  6. Step 6: Final answer
    x = 85.80

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.