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Finding the Fourth Proportional to 1,117.55, 1,676.09 and 377.09

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Solution

The fourth proportional to 1,117.55, 1,676.09 and 377.09 is: 565.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.55 : 1,676.09 = 377.09 : x
  2. Step 2: Convert to fraction form
    1,117.55/1,676.09 = 377.09/x
  3. Step 3: Cross multiply
    1,117.55x = 1,676.09 × 377.09
  4. Step 4: Simplify right side
    1,117.55x = 632,036.78
  5. Step 5: Solve for x
    x = 632,036.78/1,117.55
  6. Step 6: Final answer
    x = 565.56

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1.5x scale

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.