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Finding the Fourth Proportional to 469.23, 647.24 and 294.27

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Solution

The fourth proportional to 469.23, 647.24 and 294.27 is: 405.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.23 : 647.24 = 294.27 : x
  2. Step 2: Convert to fraction form
    469.23/647.24 = 294.27/x
  3. Step 3: Cross multiply
    469.23x = 647.24 × 294.27
  4. Step 4: Simplify right side
    469.23x = 190,461.84
  5. Step 5: Solve for x
    x = 190,461.84/469.23
  6. Step 6: Final answer
    x = 405.90

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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.