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Finding the Fourth Proportional to 730.07, 1,007.47 and 450.42

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Solution

The fourth proportional to 730.07, 1,007.47 and 450.42 is: 621.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.07 : 1,007.47 = 450.42 : x
  2. Step 2: Convert to fraction form
    730.07/1,007.47 = 450.42/x
  3. Step 3: Cross multiply
    730.07x = 1,007.47 × 450.42
  4. Step 4: Simplify right side
    730.07x = 453,784.64
  5. Step 5: Solve for x
    x = 453,784.64/730.07
  6. Step 6: Final answer
    x = 621.56

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1.5x scale

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.