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Finding the Fourth Proportional to 909.09, 1,363.29 and 470.18

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Solution

The fourth proportional to 909.09, 1,363.29 and 470.18 is: 705.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    909.09 : 1,363.29 = 470.18 : x
  2. Step 2: Convert to fraction form
    909.09/1,363.29 = 470.18/x
  3. Step 3: Cross multiply
    909.09x = 1,363.29 × 470.18
  4. Step 4: Simplify right side
    909.09x = 640,983.11
  5. Step 5: Solve for x
    x = 640,983.11/909.09
  6. Step 6: Final answer
    x = 705.08

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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.