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Finding the Fourth Proportional to 707.93, 1,061.88 and 297.35

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Solution

The fourth proportional to 707.93, 1,061.88 and 297.35 is: 446.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.93 : 1,061.88 = 297.35 : x
  2. Step 2: Convert to fraction form
    707.93/1,061.88 = 297.35/x
  3. Step 3: Cross multiply
    707.93x = 1,061.88 × 297.35
  4. Step 4: Simplify right side
    707.93x = 315,750.02
  5. Step 5: Solve for x
    x = 315,750.02/707.93
  6. Step 6: Final answer
    x = 446.02

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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.