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Finding the Fourth Proportional to 582.04, 802.87 and 393.31

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Solution

The fourth proportional to 582.04, 802.87 and 393.31 is: 542.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.04 : 802.87 = 393.31 : x
  2. Step 2: Convert to fraction form
    582.04/802.87 = 393.31/x
  3. Step 3: Cross multiply
    582.04x = 802.87 × 393.31
  4. Step 4: Simplify right side
    582.04x = 315,776.80
  5. Step 5: Solve for x
    x = 315,776.80/582.04
  6. Step 6: Final answer
    x = 542.53

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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.