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Finding the Fourth Proportional to 351.51, 526.59 and 265.40

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Solution

The fourth proportional to 351.51, 526.59 and 265.40 is: 397.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.51 : 526.59 = 265.40 : x
  2. Step 2: Convert to fraction form
    351.51/526.59 = 265.40/x
  3. Step 3: Cross multiply
    351.51x = 526.59 × 265.40
  4. Step 4: Simplify right side
    351.51x = 139,758.30
  5. Step 5: Solve for x
    x = 139,758.30/351.51
  6. Step 6: Final answer
    x = 397.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.