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Finding the Fourth Proportional to 515.88, 715.26 and 507.36

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Solution

The fourth proportional to 515.88, 715.26 and 507.36 is: 703.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.88 : 715.26 = 507.36 : x
  2. Step 2: Convert to fraction form
    515.88/715.26 = 507.36/x
  3. Step 3: Cross multiply
    515.88x = 715.26 × 507.36
  4. Step 4: Simplify right side
    515.88x = 362,894.31
  5. Step 5: Solve for x
    x = 362,894.31/515.88
  6. Step 6: Final answer
    x = 703.45

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.