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Finding the Fourth Proportional to 1,009.60, 1,514.69 and 360.38

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Solution

The fourth proportional to 1,009.60, 1,514.69 and 360.38 is: 540.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009.60 : 1,514.69 = 360.38 : x
  2. Step 2: Convert to fraction form
    1,009.60/1,514.69 = 360.38/x
  3. Step 3: Cross multiply
    1,009.60x = 1,514.69 × 360.38
  4. Step 4: Simplify right side
    1,009.60x = 545,863.98
  5. Step 5: Solve for x
    x = 545,863.98/1,009.60
  6. Step 6: Final answer
    x = 540.67

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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.