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Finding the Fourth Proportional to 473.22, 653.12 and 307.92

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Solution

The fourth proportional to 473.22, 653.12 and 307.92 is: 424.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.22 : 653.12 = 307.92 : x
  2. Step 2: Convert to fraction form
    473.22/653.12 = 307.92/x
  3. Step 3: Cross multiply
    473.22x = 653.12 × 307.92
  4. Step 4: Simplify right side
    473.22x = 201,108.71
  5. Step 5: Solve for x
    x = 201,108.71/473.22
  6. Step 6: Final answer
    x = 424.98

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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.