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Finding the Fourth Proportional to 730.13, 1,007.57 and 435.79

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Solution

The fourth proportional to 730.13, 1,007.57 and 435.79 is: 601.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.13 : 1,007.57 = 435.79 : x
  2. Step 2: Convert to fraction form
    730.13/1,007.57 = 435.79/x
  3. Step 3: Cross multiply
    730.13x = 1,007.57 × 435.79
  4. Step 4: Simplify right side
    730.13x = 439,091.28
  5. Step 5: Solve for x
    x = 439,091.28/730.13
  6. Step 6: Final answer
    x = 601.39

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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.