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Finding the Fourth Proportional to 897.80, 1,346.26 and 410.60

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Solution

The fourth proportional to 897.80, 1,346.26 and 410.60 is: 615.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.80 : 1,346.26 = 410.60 : x
  2. Step 2: Convert to fraction form
    897.80/1,346.26 = 410.60/x
  3. Step 3: Cross multiply
    897.80x = 1,346.26 × 410.60
  4. Step 4: Simplify right side
    897.80x = 552,774.36
  5. Step 5: Solve for x
    x = 552,774.36/897.80
  6. Step 6: Final answer
    x = 615.70

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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.