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Finding the Fourth Proportional to 864.06, 1,192.38 and 471.09

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Solution

The fourth proportional to 864.06, 1,192.38 and 471.09 is: 650.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    864.06 : 1,192.38 = 471.09 : x
  2. Step 2: Convert to fraction form
    864.06/1,192.38 = 471.09/x
  3. Step 3: Cross multiply
    864.06x = 1,192.38 × 471.09
  4. Step 4: Simplify right side
    864.06x = 561,718.29
  5. Step 5: Solve for x
    x = 561,718.29/864.06
  6. Step 6: Final answer
    x = 650.09

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1.5x scale

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.