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Finding the Fourth Proportional to 767.84, 1,060.16 and 473.60

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Solution

The fourth proportional to 767.84, 1,060.16 and 473.60 is: 653.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    767.84 : 1,060.16 = 473.60 : x
  2. Step 2: Convert to fraction form
    767.84/1,060.16 = 473.60/x
  3. Step 3: Cross multiply
    767.84x = 1,060.16 × 473.60
  4. Step 4: Simplify right side
    767.84x = 502,091.78
  5. Step 5: Solve for x
    x = 502,091.78/767.84
  6. Step 6: Final answer
    x = 653.90

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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.