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Finding the Fourth Proportional to 894.60, 1,341.36 and 407.16

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Solution

The fourth proportional to 894.60, 1,341.36 and 407.16 is: 610.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.60 : 1,341.36 = 407.16 : x
  2. Step 2: Convert to fraction form
    894.60/1,341.36 = 407.16/x
  3. Step 3: Cross multiply
    894.60x = 1,341.36 × 407.16
  4. Step 4: Simplify right side
    894.60x = 546,148.14
  5. Step 5: Solve for x
    x = 546,148.14/894.60
  6. Step 6: Final answer
    x = 610.49

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Double scale
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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.