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Finding the Fourth Proportional to 162.58, 224.32 and 99.58

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Solution

The fourth proportional to 162.58, 224.32 and 99.58 is: 137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.58 : 224.32 = 99.58 : x
  2. Step 2: Convert to fraction form
    162.58/224.32 = 99.58/x
  3. Step 3: Cross multiply
    162.58x = 224.32 × 99.58
  4. Step 4: Simplify right side
    162.58x = 22,337.79
  5. Step 5: Solve for x
    x = 22,337.79/162.58
  6. Step 6: Final answer
    x = 137.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.