Home / 1,118.20-1,677.18-570.16

Finding the Fourth Proportional to 1,118.20, 1,677.18 and 570.16

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Solution

The fourth proportional to 1,118.20, 1,677.18 and 570.16 is: 855.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.20 : 1,677.18 = 570.16 : x
  2. Step 2: Convert to fraction form
    1,118.20/1,677.18 = 570.16/x
  3. Step 3: Cross multiply
    1,118.20x = 1,677.18 × 570.16
  4. Step 4: Simplify right side
    1,118.20x = 956,260.95
  5. Step 5: Solve for x
    x = 956,260.95/1,118.20
  6. Step 6: Final answer
    x = 855.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.