Home / 1,117.20-1,675.68-569.16

Finding the Fourth Proportional to 1,117.20, 1,675.68 and 569.16

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Solution

The fourth proportional to 1,117.20, 1,675.68 and 569.16 is: 853.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.20 : 1,675.68 = 569.16 : x
  2. Step 2: Convert to fraction form
    1,117.20/1,675.68 = 569.16/x
  3. Step 3: Cross multiply
    1,117.20x = 1,675.68 × 569.16
  4. Step 4: Simplify right side
    1,117.20x = 953,730.03
  5. Step 5: Solve for x
    x = 953,730.03/1,117.20
  6. Step 6: Final answer
    x = 853.68

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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.