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Finding the Fourth Proportional to 894.51, 1,233.45 and 615.15

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Solution

The fourth proportional to 894.51, 1,233.45 and 615.15 is: 848.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.51 : 1,233.45 = 615.15 : x
  2. Step 2: Convert to fraction form
    894.51/1,233.45 = 615.15/x
  3. Step 3: Cross multiply
    894.51x = 1,233.45 × 615.15
  4. Step 4: Simplify right side
    894.51x = 758,756.77
  5. Step 5: Solve for x
    x = 758,756.77/894.51
  6. Step 6: Final answer
    x = 848.24

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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.