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Finding the Fourth Proportional to 897.31, 1,346.37 and 458.29

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Solution

The fourth proportional to 897.31, 1,346.37 and 458.29 is: 687.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.31 : 1,346.37 = 458.29 : x
  2. Step 2: Convert to fraction form
    897.31/1,346.37 = 458.29/x
  3. Step 3: Cross multiply
    897.31x = 1,346.37 × 458.29
  4. Step 4: Simplify right side
    897.31x = 617,018.88
  5. Step 5: Solve for x
    x = 617,018.88/897.31
  6. Step 6: Final answer
    x = 687.64

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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.