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Finding the Fourth Proportional to 1,118.07, 1,677.23 and 338.07

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Solution

The fourth proportional to 1,118.07, 1,677.23 and 338.07 is: 507.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.07 : 1,677.23 = 338.07 : x
  2. Step 2: Convert to fraction form
    1,118.07/1,677.23 = 338.07/x
  3. Step 3: Cross multiply
    1,118.07x = 1,677.23 × 338.07
  4. Step 4: Simplify right side
    1,118.07x = 567,021.15
  5. Step 5: Solve for x
    x = 567,021.15/1,118.07
  6. Step 6: Final answer
    x = 507.14

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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.