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Finding the Fourth Proportional to 469.01, 647.32 and 272.53

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Solution

The fourth proportional to 469.01, 647.32 and 272.53 is: 376.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.01 : 647.32 = 272.53 : x
  2. Step 2: Convert to fraction form
    469.01/647.32 = 272.53/x
  3. Step 3: Cross multiply
    469.01x = 647.32 × 272.53
  4. Step 4: Simplify right side
    469.01x = 176,411.14
  5. Step 5: Solve for x
    x = 176,411.14/469.01
  6. Step 6: Final answer
    x = 376.14

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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.