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Finding the Fourth Proportional to 798.55, 1,101.72 and 466.90

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Solution

The fourth proportional to 798.55, 1,101.72 and 466.90 is: 644.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.55 : 1,101.72 = 466.90 : x
  2. Step 2: Convert to fraction form
    798.55/1,101.72 = 466.90/x
  3. Step 3: Cross multiply
    798.55x = 1,101.72 × 466.90
  4. Step 4: Simplify right side
    798.55x = 514,393.07
  5. Step 5: Solve for x
    x = 514,393.07/798.55
  6. Step 6: Final answer
    x = 644.16

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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.