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Finding the Fourth Proportional to 1,040.92, 1,436.39 and 598.74

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Solution

The fourth proportional to 1,040.92, 1,436.39 and 598.74 is: 826.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.92 : 1,436.39 = 598.74 : x
  2. Step 2: Convert to fraction form
    1,040.92/1,436.39 = 598.74/x
  3. Step 3: Cross multiply
    1,040.92x = 1,436.39 × 598.74
  4. Step 4: Simplify right side
    1,040.92x = 860,014.72
  5. Step 5: Solve for x
    x = 860,014.72/1,040.92
  6. Step 6: Final answer
    x = 826.21

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Double scale
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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.