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Finding the Fourth Proportional to 802.48, 1,107.36 and 470.86

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Solution

The fourth proportional to 802.48, 1,107.36 and 470.86 is: 649.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.48 : 1,107.36 = 470.86 : x
  2. Step 2: Convert to fraction form
    802.48/1,107.36 = 470.86/x
  3. Step 3: Cross multiply
    802.48x = 1,107.36 × 470.86
  4. Step 4: Simplify right side
    802.48x = 521,411.53
  5. Step 5: Solve for x
    x = 521,411.53/802.48
  6. Step 6: Final answer
    x = 649.75

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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.