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Finding the Fourth Proportional to 59.93, 89.74 and 53.40

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Solution

The fourth proportional to 59.93, 89.74 and 53.40 is: 79.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.93 : 89.74 = 53.40 : x
  2. Step 2: Convert to fraction form
    59.93/89.74 = 53.40/x
  3. Step 3: Cross multiply
    59.93x = 89.74 × 53.40
  4. Step 4: Simplify right side
    59.93x = 4,792.12
  5. Step 5: Solve for x
    x = 4,792.12/59.93
  6. Step 6: Final answer
    x = 79.96

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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.