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Finding the Fourth Proportional to 509.04, 763.07 and 200.79

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Solution

The fourth proportional to 509.04, 763.07 and 200.79 is: 300.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.04 : 763.07 = 200.79 : x
  2. Step 2: Convert to fraction form
    509.04/763.07 = 200.79/x
  3. Step 3: Cross multiply
    509.04x = 763.07 × 200.79
  4. Step 4: Simplify right side
    509.04x = 153,215.82
  5. Step 5: Solve for x
    x = 153,215.82/509.04
  6. Step 6: Final answer
    x = 300.99

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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.