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Finding the Fourth Proportional to 98.77, 148.19 and 62.66

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Solution

The fourth proportional to 98.77, 148.19 and 62.66 is: 94.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.77 : 148.19 = 62.66 : x
  2. Step 2: Convert to fraction form
    98.77/148.19 = 62.66/x
  3. Step 3: Cross multiply
    98.77x = 148.19 × 62.66
  4. Step 4: Simplify right side
    98.77x = 9,284.53
  5. Step 5: Solve for x
    x = 9,284.53/98.77
  6. Step 6: Final answer
    x = 94.00

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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.