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Finding the Fourth Proportional to 647.51, 970.58 and 282.20

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Solution

The fourth proportional to 647.51, 970.58 and 282.20 is: 423.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.51 : 970.58 = 282.20 : x
  2. Step 2: Convert to fraction form
    647.51/970.58 = 282.20/x
  3. Step 3: Cross multiply
    647.51x = 970.58 × 282.20
  4. Step 4: Simplify right side
    647.51x = 273,893.53
  5. Step 5: Solve for x
    x = 273,893.53/647.51
  6. Step 6: Final answer
    x = 423.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.