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Finding the Fourth Proportional to 704.58, 970.29 and 690.23

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Solution

The fourth proportional to 704.58, 970.29 and 690.23 is: 950.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.58 : 970.29 = 690.23 : x
  2. Step 2: Convert to fraction form
    704.58/970.29 = 690.23/x
  3. Step 3: Cross multiply
    704.58x = 970.29 × 690.23
  4. Step 4: Simplify right side
    704.58x = 669,718.42
  5. Step 5: Solve for x
    x = 669,718.42/704.58
  6. Step 6: Final answer
    x = 950.52

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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.