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Finding the Fourth Proportional to 647.83, 894.03 and 368.05

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Solution

The fourth proportional to 647.83, 894.03 and 368.05 is: 507.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.83 : 894.03 = 368.05 : x
  2. Step 2: Convert to fraction form
    647.83/894.03 = 368.05/x
  3. Step 3: Cross multiply
    647.83x = 894.03 × 368.05
  4. Step 4: Simplify right side
    647.83x = 329,047.74
  5. Step 5: Solve for x
    x = 329,047.74/647.83
  6. Step 6: Final answer
    x = 507.92

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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.