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Finding the Fourth Proportional to 530.61, 795.89 and 315.56

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Solution

The fourth proportional to 530.61, 795.89 and 315.56 is: 473.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.61 : 795.89 = 315.56 : x
  2. Step 2: Convert to fraction form
    530.61/795.89 = 315.56/x
  3. Step 3: Cross multiply
    530.61x = 795.89 × 315.56
  4. Step 4: Simplify right side
    530.61x = 251,145.49
  5. Step 5: Solve for x
    x = 251,145.49/530.61
  6. Step 6: Final answer
    x = 473.31

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