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Finding the Fourth Proportional to 672.06, 999.96 and 655.32

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Solution

The fourth proportional to 672.06, 999.96 and 655.32 is: 975.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.06 : 999.96 = 655.32 : x
  2. Step 2: Convert to fraction form
    672.06/999.96 = 655.32/x
  3. Step 3: Cross multiply
    672.06x = 999.96 × 655.32
  4. Step 4: Simplify right side
    672.06x = 655,293.79
  5. Step 5: Solve for x
    x = 655,293.79/672.06
  6. Step 6: Final answer
    x = 975.05

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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.