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Finding the Fourth Proportional to 251.85, 347.54 and 152.29

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Solution

The fourth proportional to 251.85, 347.54 and 152.29 is: 210.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.85 : 347.54 = 152.29 : x
  2. Step 2: Convert to fraction form
    251.85/347.54 = 152.29/x
  3. Step 3: Cross multiply
    251.85x = 347.54 × 152.29
  4. Step 4: Simplify right side
    251.85x = 52,925.20
  5. Step 5: Solve for x
    x = 52,925.20/251.85
  6. Step 6: Final answer
    x = 210.15

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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.