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Finding the Fourth Proportional to 703.35, 969.59 and 492.89

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Solution

The fourth proportional to 703.35, 969.59 and 492.89 is: 679.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.35 : 969.59 = 492.89 : x
  2. Step 2: Convert to fraction form
    703.35/969.59 = 492.89/x
  3. Step 3: Cross multiply
    703.35x = 969.59 × 492.89
  4. Step 4: Simplify right side
    703.35x = 477,893.90
  5. Step 5: Solve for x
    x = 477,893.90/703.35
  6. Step 6: Final answer
    x = 679.45

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1.5x scale

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.