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Finding the Fourth Proportional to 710.37, 979.47 and 500.58

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Solution

The fourth proportional to 710.37, 979.47 and 500.58 is: 690.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.37 : 979.47 = 500.58 : x
  2. Step 2: Convert to fraction form
    710.37/979.47 = 500.58/x
  3. Step 3: Cross multiply
    710.37x = 979.47 × 500.58
  4. Step 4: Simplify right side
    710.37x = 490,303.09
  5. Step 5: Solve for x
    x = 490,303.09/710.37
  6. Step 6: Final answer
    x = 690.21

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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.