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Finding the Fourth Proportional to 864.03, 1,192.35 and 471.05

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Solution

The fourth proportional to 864.03, 1,192.35 and 471.05 is: 650.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    864.03 : 1,192.35 = 471.05 : x
  2. Step 2: Convert to fraction form
    864.03/1,192.35 = 471.05/x
  3. Step 3: Cross multiply
    864.03x = 1,192.35 × 471.05
  4. Step 4: Simplify right side
    864.03x = 561,656.47
  5. Step 5: Solve for x
    x = 561,656.47/864.03
  6. Step 6: Final answer
    x = 650.04

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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.