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Finding the Fourth Proportional to 837.54, 1,155.68 and 483.32

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Solution

The fourth proportional to 837.54, 1,155.68 and 483.32 is: 666.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.54 : 1,155.68 = 483.32 : x
  2. Step 2: Convert to fraction form
    837.54/1,155.68 = 483.32/x
  3. Step 3: Cross multiply
    837.54x = 1,155.68 × 483.32
  4. Step 4: Simplify right side
    837.54x = 558,565.54
  5. Step 5: Solve for x
    x = 558,565.54/837.54
  6. Step 6: Final answer
    x = 666.91

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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.