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Finding the Fourth Proportional to 534.86, 802.25 and 318.25

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Solution

The fourth proportional to 534.86, 802.25 and 318.25 is: 477.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.86 : 802.25 = 318.25 : x
  2. Step 2: Convert to fraction form
    534.86/802.25 = 318.25/x
  3. Step 3: Cross multiply
    534.86x = 802.25 × 318.25
  4. Step 4: Simplify right side
    534.86x = 255,316.06
  5. Step 5: Solve for x
    x = 255,316.06/534.86
  6. Step 6: Final answer
    x = 477.35

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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.