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Finding the Fourth Proportional to 526.86, 790.48 and 161.74

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Solution

The fourth proportional to 526.86, 790.48 and 161.74 is: 242.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.86 : 790.48 = 161.74 : x
  2. Step 2: Convert to fraction form
    526.86/790.48 = 161.74/x
  3. Step 3: Cross multiply
    526.86x = 790.48 × 161.74
  4. Step 4: Simplify right side
    526.86x = 127,852.24
  5. Step 5: Solve for x
    x = 127,852.24/526.86
  6. Step 6: Final answer
    x = 242.67

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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.