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Finding the Fourth Proportional to 423.13, 583.72 and 275.71

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Solution

The fourth proportional to 423.13, 583.72 and 275.71 is: 380.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.13 : 583.72 = 275.71 : x
  2. Step 2: Convert to fraction form
    423.13/583.72 = 275.71/x
  3. Step 3: Cross multiply
    423.13x = 583.72 × 275.71
  4. Step 4: Simplify right side
    423.13x = 160,935.29
  5. Step 5: Solve for x
    x = 160,935.29/423.13
  6. Step 6: Final answer
    x = 380.35

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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.