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Finding the Fourth Proportional to 1,009.70, 1,514.68 and 360.26

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Solution

The fourth proportional to 1,009.70, 1,514.68 and 360.26 is: 540.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009.70 : 1,514.68 = 360.26 : x
  2. Step 2: Convert to fraction form
    1,009.70/1,514.68 = 360.26/x
  3. Step 3: Cross multiply
    1,009.70x = 1,514.68 × 360.26
  4. Step 4: Simplify right side
    1,009.70x = 545,678.62
  5. Step 5: Solve for x
    x = 545,678.62/1,009.70
  6. Step 6: Final answer
    x = 540.44

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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.