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Finding the Fourth Proportional to 368.46, 507.91 and 275.06

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Solution

The fourth proportional to 368.46, 507.91 and 275.06 is: 379.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.46 : 507.91 = 275.06 : x
  2. Step 2: Convert to fraction form
    368.46/507.91 = 275.06/x
  3. Step 3: Cross multiply
    368.46x = 507.91 × 275.06
  4. Step 4: Simplify right side
    368.46x = 139,706.31
  5. Step 5: Solve for x
    x = 139,706.31/368.46
  6. Step 6: Final answer
    x = 379.16

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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.