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Finding the Fourth Proportional to 473.47, 653.30 and 276.95

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Solution

The fourth proportional to 473.47, 653.30 and 276.95 is: 382.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.47 : 653.30 = 276.95 : x
  2. Step 2: Convert to fraction form
    473.47/653.30 = 276.95/x
  3. Step 3: Cross multiply
    473.47x = 653.30 × 276.95
  4. Step 4: Simplify right side
    473.47x = 180,926.78
  5. Step 5: Solve for x
    x = 180,926.78/473.47
  6. Step 6: Final answer
    x = 382.13

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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.