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Finding the Fourth Proportional to 800.70, 1,104.95 and 469.14

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Solution

The fourth proportional to 800.70, 1,104.95 and 469.14 is: 647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.70 : 1,104.95 = 469.14 : x
  2. Step 2: Convert to fraction form
    800.70/1,104.95 = 469.14/x
  3. Step 3: Cross multiply
    800.70x = 1,104.95 × 469.14
  4. Step 4: Simplify right side
    800.70x = 518,376.24
  5. Step 5: Solve for x
    x = 518,376.24/800.70
  6. Step 6: Final answer
    x = 647.40

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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.