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Finding the Fourth Proportional to 689.04, 951 and 440.16

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Solution

The fourth proportional to 689.04, 951 and 440.16 is: 607.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    689.04 : 951 = 440.16 : x
  2. Step 2: Convert to fraction form
    689.04/951 = 440.16/x
  3. Step 3: Cross multiply
    689.04x = 951 × 440.16
  4. Step 4: Simplify right side
    689.04x = 418,592.16
  5. Step 5: Solve for x
    x = 418,592.16/689.04
  6. Step 6: Final answer
    x = 607.50

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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.