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Finding the Fourth Proportional to 948.44, 1,308.90 and 653.84

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Solution

The fourth proportional to 948.44, 1,308.90 and 653.84 is: 902.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    948.44 : 1,308.90 = 653.84 : x
  2. Step 2: Convert to fraction form
    948.44/1,308.90 = 653.84/x
  3. Step 3: Cross multiply
    948.44x = 1,308.90 × 653.84
  4. Step 4: Simplify right side
    948.44x = 855,811.18
  5. Step 5: Solve for x
    x = 855,811.18/948.44
  6. Step 6: Final answer
    x = 902.34

Related Problems

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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.