Home / 1,117.08-1,541.76-668.82

Finding the Fourth Proportional to 1,117.08, 1,541.76 and 668.82

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Solution

The fourth proportional to 1,117.08, 1,541.76 and 668.82 is: 923.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.08 : 1,541.76 = 668.82 : x
  2. Step 2: Convert to fraction form
    1,117.08/1,541.76 = 668.82/x
  3. Step 3: Cross multiply
    1,117.08x = 1,541.76 × 668.82
  4. Step 4: Simplify right side
    1,117.08x = 1,031,159.92
  5. Step 5: Solve for x
    x = 1,031,159.92/1,117.08
  6. Step 6: Final answer
    x = 923.09

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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.