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Finding the Fourth Proportional to 102.47, 152.98 and 88.03

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Solution

The fourth proportional to 102.47, 152.98 and 88.03 is: 131.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    102.47 : 152.98 = 88.03 : x
  2. Step 2: Convert to fraction form
    102.47/152.98 = 88.03/x
  3. Step 3: Cross multiply
    102.47x = 152.98 × 88.03
  4. Step 4: Simplify right side
    102.47x = 13,466.83
  5. Step 5: Solve for x
    x = 13,466.83/102.47
  6. Step 6: Final answer
    x = 131.42

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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.