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Finding the Fourth Proportional to 513.63, 708.57 and 373.69

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Solution

The fourth proportional to 513.63, 708.57 and 373.69 is: 515.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.63 : 708.57 = 373.69 : x
  2. Step 2: Convert to fraction form
    513.63/708.57 = 373.69/x
  3. Step 3: Cross multiply
    513.63x = 708.57 × 373.69
  4. Step 4: Simplify right side
    513.63x = 264,783.75
  5. Step 5: Solve for x
    x = 264,783.75/513.63
  6. Step 6: Final answer
    x = 515.51

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1.5x scale

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.