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Finding the Fourth Proportional to 485.19, 724.95 and 468.18

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Solution

The fourth proportional to 485.19, 724.95 and 468.18 is: 699.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.19 : 724.95 = 468.18 : x
  2. Step 2: Convert to fraction form
    485.19/724.95 = 468.18/x
  3. Step 3: Cross multiply
    485.19x = 724.95 × 468.18
  4. Step 4: Simplify right side
    485.19x = 339,407.09
  5. Step 5: Solve for x
    x = 339,407.09/485.19
  6. Step 6: Final answer
    x = 699.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.