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Finding the Fourth Proportional to 899.52, 1,356.48 and 845.76

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Solution

The fourth proportional to 899.52, 1,356.48 and 845.76 is: 1,275.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.52 : 1,356.48 = 845.76 : x
  2. Step 2: Convert to fraction form
    899.52/1,356.48 = 845.76/x
  3. Step 3: Cross multiply
    899.52x = 1,356.48 × 845.76
  4. Step 4: Simplify right side
    899.52x = 1,147,256.52
  5. Step 5: Solve for x
    x = 1,147,256.52/899.52
  6. Step 6: Final answer
    x = 1,275.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.