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Finding the Fourth Proportional to 730.88, 1,009.04 and 556.55

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Solution

The fourth proportional to 730.88, 1,009.04 and 556.55 is: 768.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.88 : 1,009.04 = 556.55 : x
  2. Step 2: Convert to fraction form
    730.88/1,009.04 = 556.55/x
  3. Step 3: Cross multiply
    730.88x = 1,009.04 × 556.55
  4. Step 4: Simplify right side
    730.88x = 561,573.38
  5. Step 5: Solve for x
    x = 561,573.38/730.88
  6. Step 6: Final answer
    x = 768.36

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Double scale
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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.