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Finding the Fourth Proportional to 900.56, 1,350.94 and 284.28

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Solution

The fourth proportional to 900.56, 1,350.94 and 284.28 is: 426.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.56 : 1,350.94 = 284.28 : x
  2. Step 2: Convert to fraction form
    900.56/1,350.94 = 284.28/x
  3. Step 3: Cross multiply
    900.56x = 1,350.94 × 284.28
  4. Step 4: Simplify right side
    900.56x = 384,045.22
  5. Step 5: Solve for x
    x = 384,045.22/900.56
  6. Step 6: Final answer
    x = 426.45

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1.5x scale

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.