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Finding the Fourth Proportional to 703.17, 970.47 and 528.21

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Solution

The fourth proportional to 703.17, 970.47 and 528.21 is: 729.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.17 : 970.47 = 528.21 : x
  2. Step 2: Convert to fraction form
    703.17/970.47 = 528.21/x
  3. Step 3: Cross multiply
    703.17x = 970.47 × 528.21
  4. Step 4: Simplify right side
    703.17x = 512,611.96
  5. Step 5: Solve for x
    x = 512,611.96/703.17
  6. Step 6: Final answer
    x = 729.00

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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.