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Finding the Fourth Proportional to 483.30, 720.79 and 436.59

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Solution

The fourth proportional to 483.30, 720.79 and 436.59 is: 651.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.30 : 720.79 = 436.59 : x
  2. Step 2: Convert to fraction form
    483.30/720.79 = 436.59/x
  3. Step 3: Cross multiply
    483.30x = 720.79 × 436.59
  4. Step 4: Simplify right side
    483.30x = 314,689.71
  5. Step 5: Solve for x
    x = 314,689.71/483.30
  6. Step 6: Final answer
    x = 651.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.