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Finding the Fourth Proportional to 403.79, 606.60 and 288.53

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Solution

The fourth proportional to 403.79, 606.60 and 288.53 is: 433.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.79 : 606.60 = 288.53 : x
  2. Step 2: Convert to fraction form
    403.79/606.60 = 288.53/x
  3. Step 3: Cross multiply
    403.79x = 606.60 × 288.53
  4. Step 4: Simplify right side
    403.79x = 175,022.30
  5. Step 5: Solve for x
    x = 175,022.30/403.79
  6. Step 6: Final answer
    x = 433.45

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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.