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Finding the Fourth Proportional to 374.77, 517.80 and 291.08

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Solution

The fourth proportional to 374.77, 517.80 and 291.08 is: 402.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.77 : 517.80 = 291.08 : x
  2. Step 2: Convert to fraction form
    374.77/517.80 = 291.08/x
  3. Step 3: Cross multiply
    374.77x = 517.80 × 291.08
  4. Step 4: Simplify right side
    374.77x = 150,721.22
  5. Step 5: Solve for x
    x = 150,721.22/374.77
  6. Step 6: Final answer
    x = 402.18

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Find fourth proportional to 187.38, 258.90 and 145.54
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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.