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Finding the Fourth Proportional to 589.13, 812.78 and 368.00

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Solution

The fourth proportional to 589.13, 812.78 and 368.00 is: 507.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.13 : 812.78 = 368.00 : x
  2. Step 2: Convert to fraction form
    589.13/812.78 = 368.00/x
  3. Step 3: Cross multiply
    589.13x = 812.78 × 368.00
  4. Step 4: Simplify right side
    589.13x = 299,098.98
  5. Step 5: Solve for x
    x = 299,098.98/589.13
  6. Step 6: Final answer
    x = 507.70

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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.