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Finding the Fourth Proportional to 686.07, 946.88 and 437.50

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Solution

The fourth proportional to 686.07, 946.88 and 437.50 is: 603.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    686.07 : 946.88 = 437.50 : x
  2. Step 2: Convert to fraction form
    686.07/946.88 = 437.50/x
  3. Step 3: Cross multiply
    686.07x = 946.88 × 437.50
  4. Step 4: Simplify right side
    686.07x = 414,260
  5. Step 5: Solve for x
    x = 414,260/686.07
  6. Step 6: Final answer
    x = 603.82

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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.