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Finding the Fourth Proportional to 60.63, 90.36 and 60.15

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Solution

The fourth proportional to 60.63, 90.36 and 60.15 is: 89.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.63 : 90.36 = 60.15 : x
  2. Step 2: Convert to fraction form
    60.63/90.36 = 60.15/x
  3. Step 3: Cross multiply
    60.63x = 90.36 × 60.15
  4. Step 4: Simplify right side
    60.63x = 5,435.15
  5. Step 5: Solve for x
    x = 5,435.15/60.63
  6. Step 6: Final answer
    x = 89.64

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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.