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Finding the Fourth Proportional to 906.12, 1,360.40 and 473.58

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Solution

The fourth proportional to 906.12, 1,360.40 and 473.58 is: 711.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.12 : 1,360.40 = 473.58 : x
  2. Step 2: Convert to fraction form
    906.12/1,360.40 = 473.58/x
  3. Step 3: Cross multiply
    906.12x = 1,360.40 × 473.58
  4. Step 4: Simplify right side
    906.12x = 644,255.86
  5. Step 5: Solve for x
    x = 644,255.86/906.12
  6. Step 6: Final answer
    x = 711.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.