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Finding the Fourth Proportional to 162.78, 224.60 and 152.92

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Solution

The fourth proportional to 162.78, 224.60 and 152.92 is: 211.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.78 : 224.60 = 152.92 : x
  2. Step 2: Convert to fraction form
    162.78/224.60 = 152.92/x
  3. Step 3: Cross multiply
    162.78x = 224.60 × 152.92
  4. Step 4: Simplify right side
    162.78x = 34,345.83
  5. Step 5: Solve for x
    x = 34,345.83/162.78
  6. Step 6: Final answer
    x = 211.00

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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.