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Finding the Fourth Proportional to 160.57, 240.95 and 87.45

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Solution

The fourth proportional to 160.57, 240.95 and 87.45 is: 131.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.57 : 240.95 = 87.45 : x
  2. Step 2: Convert to fraction form
    160.57/240.95 = 87.45/x
  3. Step 3: Cross multiply
    160.57x = 240.95 × 87.45
  4. Step 4: Simplify right side
    160.57x = 21,071.08
  5. Step 5: Solve for x
    x = 21,071.08/160.57
  6. Step 6: Final answer
    x = 131.23

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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.