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Finding the Fourth Proportional to 60.19, 89.71 and 56.86

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Solution

The fourth proportional to 60.19, 89.71 and 56.86 is: 84.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.19 : 89.71 = 56.86 : x
  2. Step 2: Convert to fraction form
    60.19/89.71 = 56.86/x
  3. Step 3: Cross multiply
    60.19x = 89.71 × 56.86
  4. Step 4: Simplify right side
    60.19x = 5,100.54
  5. Step 5: Solve for x
    x = 5,100.54/60.19
  6. Step 6: Final answer
    x = 84.74

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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.