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Finding the Fourth Proportional to 620.36, 931.08 and 524.24

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Solution

The fourth proportional to 620.36, 931.08 and 524.24 is: 786.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.36 : 931.08 = 524.24 : x
  2. Step 2: Convert to fraction form
    620.36/931.08 = 524.24/x
  3. Step 3: Cross multiply
    620.36x = 931.08 × 524.24
  4. Step 4: Simplify right side
    620.36x = 488,109.38
  5. Step 5: Solve for x
    x = 488,109.38/620.36
  6. Step 6: Final answer
    x = 786.82

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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.