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Finding the Fourth Proportional to 706.08, 973.80 and 631.50

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Solution

The fourth proportional to 706.08, 973.80 and 631.50 is: 870.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.08 : 973.80 = 631.50 : x
  2. Step 2: Convert to fraction form
    706.08/973.80 = 631.50/x
  3. Step 3: Cross multiply
    706.08x = 973.80 × 631.50
  4. Step 4: Simplify right side
    706.08x = 614,954.70
  5. Step 5: Solve for x
    x = 614,954.70/706.08
  6. Step 6: Final answer
    x = 870.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.