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Finding the Fourth Proportional to 730.04, 1,007.50 and 415.20

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Solution

The fourth proportional to 730.04, 1,007.50 and 415.20 is: 573.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.04 : 1,007.50 = 415.20 : x
  2. Step 2: Convert to fraction form
    730.04/1,007.50 = 415.20/x
  3. Step 3: Cross multiply
    730.04x = 1,007.50 × 415.20
  4. Step 4: Simplify right side
    730.04x = 418,314
  5. Step 5: Solve for x
    x = 418,314/730.04
  6. Step 6: Final answer
    x = 573.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.