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Finding the Fourth Proportional to 405.46, 607.31 and 297

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Solution

The fourth proportional to 405.46, 607.31 and 297 is: 444.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.46 : 607.31 = 297 : x
  2. Step 2: Convert to fraction form
    405.46/607.31 = 297/x
  3. Step 3: Cross multiply
    405.46x = 607.31 × 297
  4. Step 4: Simplify right side
    405.46x = 180,371.07
  5. Step 5: Solve for x
    x = 180,371.07/405.46
  6. Step 6: Final answer
    x = 444.86

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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.