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Finding the Fourth Proportional to 469.19, 647.48 and 270.02

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Solution

The fourth proportional to 469.19, 647.48 and 270.02 is: 372.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.19 : 647.48 = 270.02 : x
  2. Step 2: Convert to fraction form
    469.19/647.48 = 270.02/x
  3. Step 3: Cross multiply
    469.19x = 647.48 × 270.02
  4. Step 4: Simplify right side
    469.19x = 174,832.55
  5. Step 5: Solve for x
    x = 174,832.55/469.19
  6. Step 6: Final answer
    x = 372.63

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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.