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Finding the Fourth Proportional to 730.56, 1,007.64 and 556.32

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Solution

The fourth proportional to 730.56, 1,007.64 and 556.32 is: 767.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.56 : 1,007.64 = 556.32 : x
  2. Step 2: Convert to fraction form
    730.56/1,007.64 = 556.32/x
  3. Step 3: Cross multiply
    730.56x = 1,007.64 × 556.32
  4. Step 4: Simplify right side
    730.56x = 560,570.28
  5. Step 5: Solve for x
    x = 560,570.28/730.56
  6. Step 6: Final answer
    x = 767.32

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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.