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Finding the Fourth Proportional to 555.90, 834.48 and 470.31

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Solution

The fourth proportional to 555.90, 834.48 and 470.31 is: 706.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.90 : 834.48 = 470.31 : x
  2. Step 2: Convert to fraction form
    555.90/834.48 = 470.31/x
  3. Step 3: Cross multiply
    555.90x = 834.48 × 470.31
  4. Step 4: Simplify right side
    555.90x = 392,464.29
  5. Step 5: Solve for x
    x = 392,464.29/555.90
  6. Step 6: Final answer
    x = 706.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.