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Finding the Fourth Proportional to 670.88, 925.28 and 554.24

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Solution

The fourth proportional to 670.88, 925.28 and 554.24 is: 764.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.88 : 925.28 = 554.24 : x
  2. Step 2: Convert to fraction form
    670.88/925.28 = 554.24/x
  3. Step 3: Cross multiply
    670.88x = 925.28 × 554.24
  4. Step 4: Simplify right side
    670.88x = 512,827.19
  5. Step 5: Solve for x
    x = 512,827.19/670.88
  6. Step 6: Final answer
    x = 764.41

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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.