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Finding the Fourth Proportional to 647.44, 893.35 and 367.59

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Solution

The fourth proportional to 647.44, 893.35 and 367.59 is: 507.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.44 : 893.35 = 367.59 : x
  2. Step 2: Convert to fraction form
    647.44/893.35 = 367.59/x
  3. Step 3: Cross multiply
    647.44x = 893.35 × 367.59
  4. Step 4: Simplify right side
    647.44x = 328,386.53
  5. Step 5: Solve for x
    x = 328,386.53/647.44
  6. Step 6: Final answer
    x = 507.21

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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.