Home / 1,130.20-1,559.55-632.77

Finding the Fourth Proportional to 1,130.20, 1,559.55 and 632.77

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Solution

The fourth proportional to 1,130.20, 1,559.55 and 632.77 is: 873.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.20 : 1,559.55 = 632.77 : x
  2. Step 2: Convert to fraction form
    1,130.20/1,559.55 = 632.77/x
  3. Step 3: Cross multiply
    1,130.20x = 1,559.55 × 632.77
  4. Step 4: Simplify right side
    1,130.20x = 986,836.45
  5. Step 5: Solve for x
    x = 986,836.45/1,130.20
  6. Step 6: Final answer
    x = 873.15

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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.