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Finding the Fourth Proportional to 545.15, 752.06 and 368.22

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Solution

The fourth proportional to 545.15, 752.06 and 368.22 is: 507.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.15 : 752.06 = 368.22 : x
  2. Step 2: Convert to fraction form
    545.15/752.06 = 368.22/x
  3. Step 3: Cross multiply
    545.15x = 752.06 × 368.22
  4. Step 4: Simplify right side
    545.15x = 276,921.69
  5. Step 5: Solve for x
    x = 276,921.69/545.15
  6. Step 6: Final answer
    x = 507.98

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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.