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Finding the Fourth Proportional to 730.40, 1,094.48 and 648.32

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Solution

The fourth proportional to 730.40, 1,094.48 and 648.32 is: 971.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.40 : 1,094.48 = 648.32 : x
  2. Step 2: Convert to fraction form
    730.40/1,094.48 = 648.32/x
  3. Step 3: Cross multiply
    730.40x = 1,094.48 × 648.32
  4. Step 4: Simplify right side
    730.40x = 709,573.27
  5. Step 5: Solve for x
    x = 709,573.27/730.40
  6. Step 6: Final answer
    x = 971.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.