Home / 1,150.20-1,587.28-626.23

Finding the Fourth Proportional to 1,150.20, 1,587.28 and 626.23

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Solution

The fourth proportional to 1,150.20, 1,587.28 and 626.23 is: 864.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150.20 : 1,587.28 = 626.23 : x
  2. Step 2: Convert to fraction form
    1,150.20/1,587.28 = 626.23/x
  3. Step 3: Cross multiply
    1,150.20x = 1,587.28 × 626.23
  4. Step 4: Simplify right side
    1,150.20x = 993,999.17
  5. Step 5: Solve for x
    x = 993,999.17/1,150.20
  6. Step 6: Final answer
    x = 864.20

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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.