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Finding the Fourth Proportional to 941.88, 1,300.14 and 648.12

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Solution

The fourth proportional to 941.88, 1,300.14 and 648.12 is: 894.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.88 : 1,300.14 = 648.12 : x
  2. Step 2: Convert to fraction form
    941.88/1,300.14 = 648.12/x
  3. Step 3: Cross multiply
    941.88x = 1,300.14 × 648.12
  4. Step 4: Simplify right side
    941.88x = 842,646.74
  5. Step 5: Solve for x
    x = 842,646.74/941.88
  6. Step 6: Final answer
    x = 894.64

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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.