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Finding the Fourth Proportional to 162.46, 242.33 and 145.18

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Solution

The fourth proportional to 162.46, 242.33 and 145.18 is: 216.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.46 : 242.33 = 145.18 : x
  2. Step 2: Convert to fraction form
    162.46/242.33 = 145.18/x
  3. Step 3: Cross multiply
    162.46x = 242.33 × 145.18
  4. Step 4: Simplify right side
    162.46x = 35,181.47
  5. Step 5: Solve for x
    x = 35,181.47/162.46
  6. Step 6: Final answer
    x = 216.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.