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Finding the Fourth Proportional to 700.30, 1,045.12 and 672.04

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Solution

The fourth proportional to 700.30, 1,045.12 and 672.04 is: 1,002.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.30 : 1,045.12 = 672.04 : x
  2. Step 2: Convert to fraction form
    700.30/1,045.12 = 672.04/x
  3. Step 3: Cross multiply
    700.30x = 1,045.12 × 672.04
  4. Step 4: Simplify right side
    700.30x = 702,362.44
  5. Step 5: Solve for x
    x = 702,362.44/700.30
  6. Step 6: Final answer
    x = 1,002.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.