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Finding the Fourth Proportional to 707.60, 977.28 and 673.04

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Solution

The fourth proportional to 707.60, 977.28 and 673.04 is: 929.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.60 : 977.28 = 673.04 : x
  2. Step 2: Convert to fraction form
    707.60/977.28 = 673.04/x
  3. Step 3: Cross multiply
    707.60x = 977.28 × 673.04
  4. Step 4: Simplify right side
    707.60x = 657,748.53
  5. Step 5: Solve for x
    x = 657,748.53/707.60
  6. Step 6: Final answer
    x = 929.55

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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.