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Finding the Fourth Proportional to 88.04, 131.90 and 53.72

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Solution

The fourth proportional to 88.04, 131.90 and 53.72 is: 80.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.04 : 131.90 = 53.72 : x
  2. Step 2: Convert to fraction form
    88.04/131.90 = 53.72/x
  3. Step 3: Cross multiply
    88.04x = 131.90 × 53.72
  4. Step 4: Simplify right side
    88.04x = 7,085.67
  5. Step 5: Solve for x
    x = 7,085.67/88.04
  6. Step 6: Final answer
    x = 80.48

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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.