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Finding the Fourth Proportional to 647.67, 894.51 and 502.07

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Solution

The fourth proportional to 647.67, 894.51 and 502.07 is: 693.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.67 : 894.51 = 502.07 : x
  2. Step 2: Convert to fraction form
    647.67/894.51 = 502.07/x
  3. Step 3: Cross multiply
    647.67x = 894.51 × 502.07
  4. Step 4: Simplify right side
    647.67x = 449,102.16
  5. Step 5: Solve for x
    x = 449,102.16/647.67
  6. Step 6: Final answer
    x = 693.41

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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.