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Finding the Fourth Proportional to 510.04, 703.86 and 289.04

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Solution

The fourth proportional to 510.04, 703.86 and 289.04 is: 398.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.04 : 703.86 = 289.04 : x
  2. Step 2: Convert to fraction form
    510.04/703.86 = 289.04/x
  3. Step 3: Cross multiply
    510.04x = 703.86 × 289.04
  4. Step 4: Simplify right side
    510.04x = 203,443.69
  5. Step 5: Solve for x
    x = 203,443.69/510.04
  6. Step 6: Final answer
    x = 398.88

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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.