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Finding the Fourth Proportional to 837.80, 1,155.99 and 506.16

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Solution

The fourth proportional to 837.80, 1,155.99 and 506.16 is: 698.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.80 : 1,155.99 = 506.16 : x
  2. Step 2: Convert to fraction form
    837.80/1,155.99 = 506.16/x
  3. Step 3: Cross multiply
    837.80x = 1,155.99 × 506.16
  4. Step 4: Simplify right side
    837.80x = 585,114.00
  5. Step 5: Solve for x
    x = 585,114.00/837.80
  6. Step 6: Final answer
    x = 698.39

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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.