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Finding the Fourth Proportional to 515.04, 773.10 and 485.34

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Solution

The fourth proportional to 515.04, 773.10 and 485.34 is: 728.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.04 : 773.10 = 485.34 : x
  2. Step 2: Convert to fraction form
    515.04/773.10 = 485.34/x
  3. Step 3: Cross multiply
    515.04x = 773.10 × 485.34
  4. Step 4: Simplify right side
    515.04x = 375,216.35
  5. Step 5: Solve for x
    x = 375,216.35/515.04
  6. Step 6: Final answer
    x = 728.52

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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.