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Finding the Fourth Proportional to 761.83, 1,051.45 and 467.30

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Solution

The fourth proportional to 761.83, 1,051.45 and 467.30 is: 644.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    761.83 : 1,051.45 = 467.30 : x
  2. Step 2: Convert to fraction form
    761.83/1,051.45 = 467.30/x
  3. Step 3: Cross multiply
    761.83x = 1,051.45 × 467.30
  4. Step 4: Simplify right side
    761.83x = 491,344.05
  5. Step 5: Solve for x
    x = 491,344.05/761.83
  6. Step 6: Final answer
    x = 644.95

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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.