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Finding the Fourth Proportional to 60.32, 90.26 and 40

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Solution

The fourth proportional to 60.32, 90.26 and 40 is: 59.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.32 : 90.26 = 40 : x
  2. Step 2: Convert to fraction form
    60.32/90.26 = 40/x
  3. Step 3: Cross multiply
    60.32x = 90.26 × 40
  4. Step 4: Simplify right side
    60.32x = 3,610.40
  5. Step 5: Solve for x
    x = 3,610.40/60.32
  6. Step 6: Final answer
    x = 59.85

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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.