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Finding the Fourth Proportional to 158.48, 237.48 and 117.72

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Solution

The fourth proportional to 158.48, 237.48 and 117.72 is: 176.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.48 : 237.48 = 117.72 : x
  2. Step 2: Convert to fraction form
    158.48/237.48 = 117.72/x
  3. Step 3: Cross multiply
    158.48x = 237.48 × 117.72
  4. Step 4: Simplify right side
    158.48x = 27,956.15
  5. Step 5: Solve for x
    x = 27,956.15/158.48
  6. Step 6: Final answer
    x = 176.40

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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.