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Finding the Fourth Proportional to 631.66, 941.47 and 619.51

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Solution

The fourth proportional to 631.66, 941.47 and 619.51 is: 923.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.66 : 941.47 = 619.51 : x
  2. Step 2: Convert to fraction form
    631.66/941.47 = 619.51/x
  3. Step 3: Cross multiply
    631.66x = 941.47 × 619.51
  4. Step 4: Simplify right side
    631.66x = 583,250.08
  5. Step 5: Solve for x
    x = 583,250.08/631.66
  6. Step 6: Final answer
    x = 923.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.