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Finding the Fourth Proportional to 423.17, 583.44 and 291.95

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Solution

The fourth proportional to 423.17, 583.44 and 291.95 is: 402.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.17 : 583.44 = 291.95 : x
  2. Step 2: Convert to fraction form
    423.17/583.44 = 291.95/x
  3. Step 3: Cross multiply
    423.17x = 583.44 × 291.95
  4. Step 4: Simplify right side
    423.17x = 170,335.31
  5. Step 5: Solve for x
    x = 170,335.31/423.17
  6. Step 6: Final answer
    x = 402.52

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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.